Sawmill-carriage



No. 624,554. Patented May'9, I899. ,N. SHAW.

sAwmLL CARRIAGE.

(Application filed Dec. 31, 1897. Renewed Oct. 10, 1898.) (No Model.)

Sheets-Sheet I.

Wifgcsscs THE NORRIS PETERS ca, vl-ioY oumov, WASNINGTON, n.c.

No. 624,554. Patented May 9, I899. N. SHAW.

SAWMILL CARRIAGE. (Application 'filed Dec. 31, 1897. Renewed Oct. 10, 1898.)

(No Model.) 3 SheetsShe:et 2.

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No. 624,554. Patented May 9,1399.

N. SHAW. I

SAWMILL CARRIAGE.

(Application filed Dec. 31, 1897. Renewed Oct. 10, 1898.)

(No Model.) 3 Sheets8heet 3.

ms Ncnms PETERS do morou'rnov. wAsnmflToN, a. c.

NITED STATES PATENT OFFICE.

NOAH SHAl", OF EAU CLAIRE, I/VISOONSIN.

SAWM l LL-CARRIAG E.

SPECIFICATION forming part of Letters Patent N 0. 624,554, dated May 9, 1899.

Application filed December 31, 1897. Renewed October 10, 1898. Serial No. 693.126. (N0 model.)

To a whom, it may concern.-

Be it known that I, NOAH SHAW, a citizen of the United States, residing at Eau Olai re, in the county of Eau Claire and State of Wis consin, have invented a new and useful Sawmill'Oarriagepf which the following is a specification.

This invention relates to sawmill-carriages, and refers particularly to the type of sawmi llcarriage disclosed in my former patent, No. 549,540, and in my pending application, Serial No.,609,089, filed October 16, 1896.

One of the objects of the present invention is to provide a new and useful mechanism for offsetting and onsetting the head-blocks whereby this result may be effected quickly and instantly by a very slight movement of the adjusting-lever for the offset-shaft. In connection with the means for offsetting and onsetting the head-blocks the invention also contemplates the use of suitably-arranged cushions, which provide for taking the strain from the supports for the head-blocks, and particularly from the offset-shaft, when a log is thrown on the head-blocks against the knees thereof.

A further object of the invention is to provide improved means forsupporting the head blocks on the carriage-frame to permit the former to move transversely of the latter in the operation of offsetting and onsetting and in connection with the movable supports for the head-blocks to provide improved lubricating in cans and a yielding rest, which serves as a cushion to relieve the downward strain of e the head-blocks when a log is rolled thereon.

preferred manner of arranging the improvements for use is illustrated in the accompanying drawings,- in which- Figure 1 is a plan view of a sawmill-carriage embodying the improvements contemplated by the present invention and showing the knees, the set-up mechanism for the same, and the set-works removed. Fig. 2 is a transverse sectional view on the line 2 2 of Fig. 1. Fig. 3 is a similar view on the line 3 3 of Fig. 1. Fig. 4 is a detail sectional view showing the cushion-box for the offset-shaft. Fig. 5 is an end view, partly in section, on the line 5 5 of. Fig. 2. Fig. 6 is a View similar to Fig. 5, showing a modified form of swinging standard for the head-blocks. Fig. 7 is a view similar to Fig. 2, showing a swinging standard and the adj Listing-cam for offsetting and onsetting combined together to form a movable support for the head-blocks. Fig. Sis anothermodification showing the peculiarly-shaped adj usting-cams employed as the movable supports as the same form no part of the present in-' vention. Arranged transversely of the carriage-frame,above the front and rear side beams 1 thereof, are the longitudinally-movable head-blocks 2, which head-blocks occupy their usual positions and are longitudinally movable to provide for offsetting and onsetting the logs. 1

In the present invention the transverselyarranged and longitudinally movable headblocks 2 are supported above and out of contact with the side beams of the carriage-frame and are provided at their opposite ends and lower side edges with the widened slideflanges 3, which slidably engage with the flanged guides 4, projected from the upper side of the chair-plates 5, which plates are secured. to the upper faces of the side beams 1 of the carriageframe directly beneath the head-blocks,which work thereover. The chair-plates 5,inclnding the guides 4 thereof, serve to hold the headblocks in their proper relative positions with respect to each other and to the carriage-frame,

while at the same time permitting the: headblocks to freely move transversely of the frame in offsetting and onsetting the log.

The present invention preferably contemplates the use of the flat wide swinging standards 6 as the movable or swinging supports for the head-blocks, said supports serving to elevate the head-blocks a slight distance above the side beams of the frame, and at the same time providing'for a free and easy movement of the same. Each head-block is supported on the upper ends of two of the standards 6, which standards are respectively arranged at the outer side of the front beam of the frame and at the inner side of the rear beam of the frame, as clearly illustrated in Fig. 2 of the drawings. The said standards are provided will be hereinafter more fully referred to.

The lower rounded horizontal ends of the swinging standards 6 for each head-block 2 turn in the bearing grooves or cavities 9, formed transversely in the upper side of a spring-steel rest-plate 10, extending transversely of the carriage-frame,beneath the side beam-s 1, andin substantial parallelism with the head-block 2,im mediately abo ve the same. The spring-steel rest-plate 10 for the swinging standards 6 of each head-block is secured at its opposite ends to the under side of the side beams 1 by means of the fastening-bolts 11, passing through said beams and also serving to secure in place the chair-plates 5, and the lower ends of the fastening-bolts 11 receive thereon the nuts 12, which bind against strengthening-plates 13, that are held firmly against the under side of the rest-plate 10, adjacent to the bearing grooves or cavities 9 for the lower ends of the standards 6, and

thereby serving to strengthen the rest-plate where the greatest strain occurs. The forward end of each rest-plate is projected beyond the outer side of the front side beam 1 of the carriage-frame, as at 14, to provide for supporting the front standard 6 for the headblock, and at this point it is to be noted that the rest-plate 10 forms a yielding or cushion base for the supports of the head-blocks and will yield sufficiently to relieve the downward strain or thrust on the head-blocks when a log is rolled thereon, it being well understood by those skilled in the art that a great strain and jarring occurs when the heavy log is thrown down on the head-blocks and against the knees thereof. It is therefore quite important that the downward strain or thrust be cushioned either in the manner described or in some equivalent way.

The spaces between the swinging standards 6 for each head-block and the adjacent beams of the carriage-frame form lubricating-pockets for the reception of lubricating-waste 15, which may be kept saturated or moist with lubricant by introducing the same through the oiling-holes 8, as already referred to, and it will also be observed that as the standards 6 approach or move toward the adjacent beams of the carriage-frame the lubricatingwaste 15 is compressed and the lubricant therein caused to run into the bearing grooves or cavities 9 for the lower ends of the standards 6. In this way the swinging supports for each head-block are self-lubricating, and it is only necessary from time to time to supply additional lubricant through the oilingholes 8, which open directly onto the upper ends of the standards 6.

To provide for excludingdust from the lubricating-pockets for the swinging supports or standards of each head-block, dust-guard strips 1 6 are preferably fastened to the framebeams closely adjacent to the side edges of the standards (5, thereby serving as closurestrips for the sides of the lubricating-pockets and preventing accumulations of sawdust therein. Vhile'the dust-guard strips 16 are preferably employed for the purpose of excluding dust from the lubricating-pockets, these pockets may be kept relieved of accumulations of sawdust by formingin the swinging standards or supports 6 enlarged dustdischarge openings 17, as illustrated in the modification shown in Fig. 6 of the drawings. In using the modified construction shown in Fig. (3 the lubricating-waste 15 fills the lower ends of the pockets up to the lower edges of the discharge-openings 17 so that any accumulation of sawdust on the waste will be worked out through said openings, thereby insuring a full and free movement for the standards 6 at all times.

To provide for the proper support of the mechanism for offsetting and onsetting the head-blocks, the rear chair-plates 5 are provided with depending flanges 18, arranged on the outer face of the rear side beam 1 and provided with offstanding bearing-arms 19, having bearing-openings 20 therein to receive the longitudinally-disposed offset-shaft 21. At one side of the offset-shaft 21, within the openings of the bearing-arms 19, are fitted the loose bearing-blocks 22, forming a halfbox for the offset-shaft and held in close contact with the shaft by means of rubber cushion-blocks 23, interposed between the blocks 22 and the outer ends of the openings in which the same are fitted. The bearing and cushion blocks 22 and 23 constitute a cushion, which serves to take the strain from the offset-shaft 21 when the log is thrown on the head-blocks against the knees thereof, it being understood that when a log is rolled on the head-blocks and forcibly strikes the knees carried thereby the said head-blocks are strained in a rearward direction or toward the offset-shaft 21.

oifset shaft and having projected from the upper side thereof a single rounded lobe 25, which snugly registers and loosely works in the concaved socket 26, formed transversely of the under side of the head-block, at the rear end thereof,im m ediately above the cam. The

' the onsetting movement.

cams for both head-blocks are duplicates in construction, and by reason of the particular shape and disposition of the lobes 25 a very quick and positive movement of the headblock is secured by a slight throw or movement of the hand-lever 22. It will further be observed that the shape and disposition of the lobes 25 of the adjusting-cams do not interfere with the head-blocks being carried forward inthe onsetting movement by their own weight, as it will be noted that as soon as the standards 6 commence to tilt forward from a vertical plane the weight of the headblocks and the works carried thereby will carrythe head-blocks forward to complete the onsetting movement without any exertion whatever on the part of the operator, which operation necessarily reduces the labor attending the adjusting of the head-blocks in The parts of the carriage a'rerelieved from undue strain and the head-blocks positively limited in their forward movement by means of a stop 27, which stop is preferably in the form of an adjustable screw secured in alug 2S, projected from the under side of each head-block, preferably adjacent to the front side beam 1 of the carriage-frame, and.said adjustable stop 27 is adapted to contact with the strike-flange depending from the inner edge of each chairplate 5, as clearly illustrated in Fig. 2 of the drawings.

its under side and at the outer or rear end thereof with a transverse concave socket 323 The head-blocks 2 carry the usual knees, (not shown,) which are provided with the usual set-up mechanism and adjusted through the medium of the ordinary set-shaft 29, arranged longitudinally within the carriageframe and mounted in the bearings 30, fitted to the head-blocks, and in order to support the set-shaft 20 at a point between the headblocks, so as to maintain said shaft in a proper position relative to the blocks, an auxiliary sliding support 31 is employed. The auxiliarysliding support 31 is slidably mounted in the chair-plate 32, fitted on the upper side of the rear beam 1 of the carriage-frame at a point between the head-blocks, and said auxiliary sliding support 31 is provided on.

which receives therein the single rounded lobe 25, projected from the upper side of the collar or ring portion 24 of an adjusting-cam 23", (ad uplicate in construction of the adj usting-cams 23, herein referred to,) and also mounted fast on the offset-shaft 21, to provide means for adjusting the auxiliary support 31 for the set-shaft simultaneously with the-head blocks. I The ordinary setworks, which are connected with the set-shaft 29, form no part of the presentinvention and are not illustrated in the drawings; but at this point it will be observed that said set-works are partly supported by the set-shaft and the sliding base-plate 33, slidably mounted on the rear frame-beam 1, so as to permit the set-works to move simultaneously with the head-blocks and the auxiliary support 31 in the manner disclosed in my pending application, Serial No. 609,089, hereinbefore referred to.

The auxiliary sliding support 31 for the setshaft does not extend entirely across the upper side of the carriage-frame, but has the inner or front end thereof terminate short of clined brace-bar extension 35, which bracebar extension extends from the inner or front end of the auxiliary support to the under side of the front side beam 1 of the carriage-frame. The inclined forwardly-extending brace eX- tension 35 of the auxiliary support is provided at its front end with a horizontal slidetongue 36, which works within the keeperplate 37, secured to the under side of the front beam 1 or the beam opposite the beam on top of which the main portion of the auxiliary support is arranged. By reason of the construction described it will be observed that the auxiliary support 31 forthe set-shaft is braced in asimple and eflicient manner,while at the same time being arranged to slide in conjunction with its brace extension,together with the head-blocks,in the offsetting and onsetting movements.

By reason of the particular shape of the adj usting-carhs for the head-blocks and the disposition of the rounded lobes thereof these cams form auxiliary supports and may be utilized as the main movable supports for the head-blocks in the manner illustrated in the modifications shown in Figs. 8 and 9 of the drawings. Referring particularly to Fig. 8 of the drawings, each head-block is shown as supported at its front end on one of the swinging standards 6 in the manner already described, while the rear swinging standards 6 'may be dispensed with and the adjustingcams 23 substituted in place thereof. In this arrangement of parts it is preferable to arrange the offset-shaft 21 at the inner side of the rear side beam 1 and to form the socket 26 of each head-block at a point farther from the rear end thereof; but said shaft may of course be allowed to remain at the outer side connection with the extra shaft 38, the offsetshaft, and the cams thereof are arrangedin the same position as illustrated in Fig. 8, so that the head-blocks swing on the rounded lobes of the oppositely-located cams as the supports thereof.

Various other modifications will suggest themselves to those skilled in the art, and it will therefore be understood that changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described the invention, what is claimed, and desired to be secured by Letters Patent, is

1. In a sawmill-carriage,the carriage-frame, a head-block movable transversely of the frame, independently of the frame-beams and out of contact therewith swinging or oscillatory supports loosely en gagingwith the under side of the'head-block, and arranged respectively at the outer sideof the front carriagebeam and at the inner side of the rear carriage-beam, with an, unrestricted clearancespace in front thereof and means for moving the head-block on its supports, substantially as set forth.

2. In asawmill-carriage,thecarriage-frame, a longitudinallymovable head block arranged transversely above the frame and movable independently thereof and out of contact therewith, swinging or oscillatory supports loosely engaging with the under side of the head-block and arranged to tilt in a forward direction from a vertical plane, said supports having an unrestricted clearance-space in front thereof and means for ofisetting and onsettin g the head-block, substantially as set forth.

In a sawmill-carriage,the carriage-frame, a longitudinally movable head block arranged transversely above and out of contact with said carriage-frame and carrying a stop adapted to engage against one of the framebeams, swinging or oscillatory supports loosely engaging with the under side of the head-block, and having an unrestricted clearance-space in front thereof and means for 0&-

setting and onsettin g the head-bloclr,substan tially as set forth. i

4. In a sawmill-carriage,the carriage-frame, a head-block movable transversely of the frame, a stationary yielding base-rest secured to the carriage-frame, movable supports engaging with the head-block and supported on said yielding base-rest, andmeans for offsetting and onsetting the head-block, substantially as set forth.

5. In a sawmillcarriage,the carriage-frame, a head-block arranged transversely above the frame and out of contact therewith, a stationary yielding rest secured to the carriageframe,and the head-block supports interposed between the head-block and said rest to re lieve the downward strain or thrust of the head-block, substantially as set forth.

6. In asawmill-carriage,the carriage-frame,

a head-block arranged above the frame and out of contact therewith, and a cushion-support arranged beneath and having connection with the head-block to cushion or relieve thedownward strain or thrust of the same, substantially as set forth.

a 7. In asawmill-carriage,the carriage-frame, a head block movable transversely of the frame, independently of the frame-beams and out of contact therewith a stationary rest secured to the carriage-frame, swinging or oscillatory standards arranged respectively at the forward sides of the front and rear side beams of the frame, and loosely engaging at their ends with said rest and head-block, said supports having an unrestricted clearancespace in front thereof and means for offsetting and onsetting the head-block, substantially as set forth.

8. In a sawmill-carriage,the carriage-frame, a head block movable transversely of the frame, a yielding rest-plate secured transversely of the carriage-frame to the under side thereof, swinging or oscillatory standards arranged respectively at the forward sides of the front and rear side beams of the frame, and loosely engaging at their ends with said rest-plate and the head-block, and means for offsetting and onsetting the head-block, substantially as set forth.

9. In a sawmill-carriage,the carriage-frame,

IIO

a head-block movable transversely of the offsetting and onsetting the head-block, substantially as set forth.

10. In a sawmill-carriage, the carriage-' frame, a head-block movable transversely of the frame and having in its under side transverse bearing-grooves and oiling-holes communicating with such grooves, a rest-plate secured to the under side of the carriage-frame and having in its upper side bearing-grooves, swinging or oscillatory standards having their ends registering respectively in the grooves of the head-block and the restplate, the space between the swinging standards and the adjacent beams of the carriage-frame forming lubricating-pockets for the reception of lubricatingwaste, and means for protecting said pockets from-accumulations of dust, substantially as set forth.

11. In a sawmill carriage, the carriageframe, a head-block movable transversely of the frame,and havinginits undersidebearinggrooves and oili ng-holes com in unicatin g there.- with, a stationary rest secured to the carriageframe, swinging or oscillatory standards in-' terposed between said rest and the head-block and having their upper ends fitting in said grooves,the spaces between the standards and the adjacent beams of the carriage frame forming lubricatingpockei's for the reception of lubricating material, and dust-guard strips fastened to the frame-beams closely adjacent to the side edges of the standards to form closure-strips for the sides of the lubricatingpockets, substantially as set forth.

12. In a sawmill carriage, the carriageframe, a longitudinallyanovable head-block arranged transversely of the frame, an offsetshaft having a connection with the head-block to provide for offsetting and onsetting the same, and a cushion arranged at one side of the shaft to take the backward strain from the head-block when the log is thrown thereon against the knees thereof, substantially as set forth.

13. In a sawmill carriage, the carriageframe, a longitudinally-movable head-block arranged transversely of the frame, a bearing-arm projected from the rear side beam of the carriage-frame, an ofiset-shaft turning in I said bearing-arm, and having an adjusting connection with the head-block, a movable half-box fitted in said bearing-arm against the offset-shaft, and a cushion inserted in the opening of the bearing-arm at one side of the half-box, substantially as set forth.

14. In a sawmill carriage, the carriageframe, a longitudinally-movable member arranged transversely of the carriage-frame and provided at its under side with a transverselydisposed concaved socket, an offsetshaft, and a cam mounted on said shaft and comprising -a collar or ring portion having projected from the upper side thereof a single rounded lobe registering in said socket, substantially as set of the carriage-frame and having a brace extension extending from its front or inner end to'the under side of the front beam of the carriage-frame, and means for reciprocating the head-blocks and the auxiliary support sim ul 'taneously, substantially as set forth.

16. In a sawmill carriage, the carriageframe, longitudinally-movable head-blocks arranged transversely of the frame, and provided with bearings, a set-shaft journaled in said bearings, an auxiliary support for the setshaft slidably mounted on the rear framebeam at a point between the head-blocks, said support being provided at its inner or front end with an integral brace-bar extensionhaving at its front end a horizontal slide-tongue engaging beneath the front beam of the care Q I riage-frame, and means for simultaneously reciprocatin g the head-blocks and the auxiliary support, substantially as set forth.

17. In a sawmill carriage, the carriageframe, longitudinally-movable head-blocks arranged transversely above and out of contact with the frame, swinging or oscillatory supports for the head-blocks arranged outside of the frame-beams and having movement independently thereof with an unrestricted clearance-space, said supports being free to tilt forward from a vertical plane whereby the weight of the head-blocks and the works carried thereby will serve to automatically complete the onsetting movement, and means for moving saidhead-blocks, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signatui re in the presence of two witnesses.

NOAH SHAW.

Witnesses:

JOHN H. SIGGERS, HAROLD H. SIMMs.

roo 

